Horse-power



To all whom it may concern:

UNITED STATES PATENT OFFICE.

JOHN H. ELWARD, OF STILLWATER, MINNESOTA.

HORSE-POWER,

SPECIFICATION forming' parl) 0f LBSSEIS Patent N0. 227,745, dated Maly 18, 1880.

Application filed March 30, 1880. (No model.)

Be it known that I, JOHN H. ELWARD, o Stillwater, county of Washington, State of Minnesota, have invented a new and useful Improvement in Horse-Powers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specication, in which- Figure l is a top-plan View of a horse-power embodying my improvements, the masterwheel and two of the transporting-wheels being removed. Fig. 2 is acentral longitudinal.

vertical section. Fig. 3 is an enlarged view of the center-pin detached. Figs. 4, 5, and 6 are detailed views of various parts enlarged.

In the drawings, A A represent the transporting-wheels, upon which thejhorse-power 1s mounted.

The general frame-work is composed of longitudinal sills B B', the front girt, C, and rear crossgirt, O', constructed and attached together in substantially the ordinary manner.

-, With this part of the frame-work' I have combined an improved supplemental frame for the purpose of immediately supportingthe machinery of the horse power. This supplemental frame is composed of two sills, D D', placed parallel with veach other and longitudinally with the main frame. The parallel sills D D are at their ends attached to the crossbars E E, supported upon the top of the main frame. The purposes for which this supplemental frame D D E E has been devised will be set forth hereinafter.

F represents the master wheel, which is mounted and supported as follows: F are radial arms, secured at their inner ends to an upper plate, F2, and a lower plate, F3, and at their outer ends attached to the master-wheel in such manner as to suspend the master-wheel from an overhanging frame composed of the parts F Fz F3.

G represents the center-pin, which is constructed and secured in position in the following improved manner: The central part ofthe pin is cylindrical, as shown in Fig. 3, and is at its lower end provided with a square or rectangular. base, as shown at g. Immediately above the base g a guide, g', is formed. g2

represents a longitudinal slot formed in one side of the center-pinl G, and extending the full length thereof.

H is a supporting-plate for the center-pin, constructed in the form distinctly shown in Fig. 5, it being cast or provided with an upwardly-extending box, h, downwardly-projecting flanges h', and laterally-projecting anges 7b2. This plate is placed upon the top of the parallel beams or sills D D at their center, and is secured in position by means of bolts passing through the laterallyprojecting lian ges h2. The plato H and the sills D D are so related 'that the flanges h h are placed in contact laterally with the edges of said sills, and serve to keep them properly separated, and at the same -time the bolts passing through the flanges h2 serve to prevent the timbers from separating, so that togetherthey form aframe of great strength at the center of the machine. The center-pin G, when in position, passes vertically through the box part It of the plate H, and is held up in position therein by means of a bracket or depending support, I. (Shown detached in Fig. 6.)

After the center-pin has been put in place,

said bracket I-is bolted to the plateH in the space between the anges h h', as shown in Fig. 2, in such manner that the guide g shall be held in place between the lateralwalls of the box h. The opening in the box h is somewhat larger in diameter than the center-pin G, so that the center-pin can be allowed to move laterally to accommodate itself to the movements ofthe master-wheel.

K represents the brake-rod of the machine, situated in the slot g2 in the center-pin. It extends above the center-pin'snfficiently farv to be provided with a hand-wheel, K', and belowthe pin it carries a crank-disk, K2.

" There is an aperture, i, in the bracket or support I, which permits the vertical brakerod'to be passed upwardly 'through such support. This aperture 11 is of a diameter somewhat longer than that of the brake-rod, so

that said rod can slide or oscillate laterally to accommodate the center-pin as it is moved by the master-wheel while in operation. This' prevents the rod from beingcramped bythe plate I.

IOO

After the center-pin G has been putin place in the center of the master-wheel, and the brake-rod K has been inserted through the pin, the parts are held together by means of a cap or washer, L. (Shown detached in Fig. 4r.) This cap or washer is formed with an annular band or ring, l, which lits tightly around the upper end of the center-pin, and with au upwardly-projecting lug, l', adapted to t in the upper part of the slot y", and form at said upper end a substantially circular opening, as`

shown at Z2.

The brake-rod is held in proper position at the upper end by means of this inwardly-projecting lug l.

The cap or washer L is held in place upon the center-pin by a key or pin, L', as shown in Fig. 3. When thus secured it operates to prevent the center of the master-wheel from rising` by reason of strain from the sweeps.

Heretofore, with horse-powers as ordinarily constructed, it was necessary to lift or remove the master-wheel out of its place when it was desired to withdraw the center-pin for any purpose whatever-as, for instance, when it was broken or worn.

This displacing of the master-wheel is very disadvantageous for many reasons, among which are the facts that it takes several men to lift one of the wheels, each of which generally weighs from six hundred to seven hundred pounds; and, again, that those who generally operate the horse-powers have but limited knowledge of the proper arranging of gearing, and in replacing the wheel they often put it on improperly, so that the teeth are rapidly worn and destroyed.

By means of the improved devices which I have described the pin may be removed from the wheel without in any wise altering thc position of the master-wheel itself'. Thus, when it is desired to remove the pin G the bolts which hold the bracket or support I are removed, and also the cap or washer L, after withdrawing pin L'. The center-pin G will then drop downward, and can be detached from the brake-stem K by means of the slot g2 in the side of the pin. After it is repaired it can be replaced by reversing the last-described steps, or, when desired, a new one can be inserted in its place.

By employing two parallel sills or beams, D D', for the support of the center-piu and master-wheel, l am enabled not only to make a much stronger frame-work at the center of the machine, as above described, but also to provide a means for readily withdrawing and inserting the center-pin and for supporting the same between said beams or sills D D'.

ching-points for the bracket plates or frames M M, which carry the brackets N, the brackets being formed in one piece with the frames M. ln these brackets N are mounted the shafts n, which carry the master-pinions O and the twin wheels l.

lliloreover, the beams D D' provide four fast- Y The bracket-plates M M are each supported at two points, m m, on the transverse sills E E, and at two other points on the sills D D'.

The limited fastening for these plates that has been permitted in horse-powers as heretofore constructed has caused great weakness in the frame-work at these points, and by constructing and arranging the frames and the plates as shown I am enabled tb provide much greater strength and security for the mounting of the pinions and twin Wheels.

I prefer to form the plates M M with inwardly-projecting arms or ears o 0, for receiving the bolts which pass through the parallel timbers D D' The power is received by the shaft Q from the twin wheels I P.

R represents the brake-wheel S, the wheel upon the power-shaft Q; T, the tumbling-rod shaft; U, the pinion on tumbling-rod shaft,

all of which parts may be of any desired construction, they forming no essential part of present invention.

l. In a horse-power, the combination, with the main frame B B' C C' and the masterwheel, of the parallel sills D D' and the central plate, H, bolted to the sills, substantially as set forth.

2. In a horse-power, the combination, with the main frame B B' C C' and the masterpinion O, of the parallel sills D D', cross-girt E, bracket N, and bracket-plate M, bolted to the girt E and to both sills D D.

3. In a horse-power, the combination of the master-wheel and a laterally-moving centerpin for said wheel, of a plate which is detachably secured to the frame, and which loosely supports the lower end of the center-pin, and is arranged to be attached to and detached from the Frame without moving the masterwheel, substantially as set forth.

4. The combination, with the* master-Wheel of a horse-power and the brake-rod passing through the center of said wheel, of a centerpin provided with a slot formed in the side of the center-pin for the reception of the brakerod, substantially as set forth.

5. The combination, with the master-wheel F and brakerod K, of center-pin G, slotted, as at g2, and the cap or washer L, substantially as set forth.

6. The combination, with the master-wheel` and the plate H, provided with the box 7L, of the center-pin G, having the head g and guide g', substantially as set forth.

7. The combination, with the master-wheel and the center-pin G, of the plate H and the bracket or support I, to be secured beneath the lower end of the center-pin, substantially as set forth.

8. The combination, with the master-wheel, the' main frame B B' and C C', and the supplemental frame constructed with the central parallel sills, D D', of the part H, provided with the dependent anges h h', adapted to IOO IIO

IIS

brace the-sills D D', and the lateral-flanges h2 h2, to be bolted to said sills, set forth.

substantially as 9. The combination of the master-wheel, the

5 slidin g center pin,

the brake-rod passing through the center-pin, and

the support I,

In testimony whereof I have'hereunto set my hand this 16th day of March, A. D. 1880. 1o l JOHN H. ELWAHD. .l

Witnesses:

AUG. F. SANFTENBERG, H. J. CHAMBERS. 

